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Show HN: I built a real-time IoT monitor bridging ESP8266, Go, and Next.js
I built Synx, a real-time temperature and humidity monitoring system that bridges hardware, systems programming, and modern web dev.
Architecture:
- ESP8266 + DHT11 sensor sending data via MQTT
- Go backend for data ingestion, writing to InfluxDB (time-series DB)
- Next.js frontend with live WebSocket updates (zero latency) and historical charts
Key engineering decisions:
- MQTT over HTTP for true real-time push
- Server-side timestamping (ESP8266 has no RTC)
- InfluxDB for efficient time-series storage
- Dual-channel: WebSocket for live data, REST API for history
I built this as a junior Go engineer to move beyond CRUD apps and work with IoT protocols, systems programming, and real-time data streaming.
Would love feedback on the architecture choices!